Edge blurring suppression of ultrasonic reflection coefficients in contact state measurement

IF 4.1 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Ndt & E International Pub Date : 2024-07-22 DOI:10.1016/j.ndteint.2024.103201

Xingyuan Wang , Chonglin Xu , Fulai Yang

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引用次数: 0

Abstract

Ultrasonic reflection coefficient is the key to contact state evaluation of mechanical devices. Edge blurring can lead to contact state (such as stress concentrations) measurement errors. This reduces the reliability of performance evaluations and introduces potential security risks. In this study, an edge blurring suppression method based on matching pursuit algorithm was proposed. Firstly, the interference signal prediction model is built based on the Nakagami model. Then, a blurred signal separation algorithm based on matching pursuit is proposed to obtain the effective signal. Finally, the reflection coefficient with and without edge blurring effect were obtained. The simulation results show that the maximum relative error of the reflection coefficient is reduced from 219 % to 15 %. The effectiveness of the proposed method is also verified by experiments. The experimental results show that the relative error of the reflection coefficient after edge blurring suppression is reduced from 64 % to 16 %. This indicates that the proposed method can effectively suppress edge blurring, which provides an effective method for edge blurring suppression in various application fields of ultrasonic measurement and improve the reliability of product quality evaluation.

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在接触状态测量中抑制超声波反射系数的边缘模糊

超声波反射系数是评估机械设备接触状态的关键。边缘模糊会导致接触状态（如应力集中）测量误差。这会降低性能评估的可靠性，并带来潜在的安全风险。本研究提出了一种基于匹配追求算法的边缘模糊抑制方法。首先，基于中神模型建立干扰信号预测模型。然后，提出一种基于匹配追寻的模糊信号分离算法，以获得有效信号。最后，得到了有边缘模糊效应和无边缘模糊效应的反射系数。仿真结果表明，反射系数的最大相对误差从 219% 降至 15%。实验也验证了所提方法的有效性。实验结果表明，抑制边缘模糊后，反射系数的相对误差从 64% 减小到 16%。这表明所提出的方法能有效抑制边缘模糊，为超声波测量的各种应用领域提供了一种有效的边缘模糊抑制方法，提高了产品质量评价的可靠性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ndt & E International 工程技术-材料科学：表征与测试

CiteScore

7.20

自引率

9.50%

发文量

121

审稿时长

55 days

期刊介绍： NDT&E international publishes peer-reviewed results of original research and development in all categories of the fields of nondestructive testing and evaluation including ultrasonics, electromagnetics, radiography, optical and thermal methods. In addition to traditional NDE topics, the emerging technology area of inspection of civil structures and materials is also emphasized. The journal publishes original papers on research and development of new inspection techniques and methods, as well as on novel and innovative applications of established methods. Papers on NDE sensors and their applications both for inspection and process control, as well as papers describing novel NDE systems for structural health monitoring and their performance in industrial settings are also considered. Other regular features include international news, new equipment and a calendar of forthcoming worldwide meetings. This journal is listed in Current Contents.